US cops prepare for crackdown on 'weed day'

LOS ANGELES, United States (AFP) — Marijuana may be legal in eight US states and the capital, but tokers getting behind the wheel on a national weed appreciation day could be in for a downer as police forces crack down on intoxicated drivers.

In places like California, where recreational marijuana has been legal since January, law enforcement officials and doctors are worried about an increase in people arrested for erratic driving and hospitalised with overdoses.

The issue is particularly acute on April 20, or 4/20, a national day of celebration in cannabis culture -- especially after 4:20 pm when usage surges.

A recent study published in the Journal of the American Medical Association which looked at 25 years of data on fatal crashes in the US found that the risk was 12 per cent higher between 4:20 pm and midnight on April 20, compared to the same time frame a week earlier and a week later.

The penalty for driving under the influence (DUI) applies to both alcohol and other forms of drugs.

There is a serious "lack of knowledge on the users, so they still feel like 'I thought I can drive, it's all legal now,'" said John Hernandez, an eight-year veteran of the Los Angeles Police Department.

- 'We're all OK' -On a recent cool weeknight Hernandez pulled over a DUI suspect at a police checkpoint. The first thing he noticed was that the car reeked of pot.

Experts warn that children could seriously overdose if they mistake the weed sweets for regular candy.

Mark Morocco, a professor and emergency care physician in Los Angeles, said doctors have seen a "gradual but progressive increase" in pediatric marijuana overdose cases since January.

Children in a pot haze usually just seem "altered," Morocco told AFP.

Doctors first have to rule out an infection or a trauma, the two leading causes of death or injury of pre-teen children.

Then they have to consider "more rare and more insidious" possibilities, such as an overdose of prescription medicine.

A marijuana overdose is "the last thing we think about," he said.

Overdosing on pot is not lethal, and the treatment is rest until the effects wear out. In the case of a minor, a social worker must also be called in.

Morocco tells parents to treat marijuana the same as prescription medicine, or "like a gun -- you need to have positive control over it in your house."

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